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arXiv · 1509.03958

The initial-state dependence of quantum speed limit

Shao-xiong Wu·Yang Zhang·Chang-shui Yu·He-shan Song
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Abstract

The generic bound of quantum speed limit time (the minimal evolution time) for a qubit system interacting with structural environment is investigated. We define a new bound for the quantum speed limit. It is shown that the non-Markovianity and the population of the excited state can fail to signal the quantum evolution acceleration, but the initial-state dependence is an important factor. In particular, we find that different quantum speed limits could produce contradictory predictions on the quantum evolution acceleration.

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Shao-xiong Wu, Yang Zhang, Chang-shui Yu, He-shan Song. 2015-09-14. The initial-state dependence of quantum speed limit. https://doi.org/10.1088/1751-8113%2F48%2F4%2F045301

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